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http://dx.doi.org/10.14190/JRCR.2021.9.2.216

Development of Eco-friendly Cement using Reverse Osmosis Brine Water and Metakaolin  

Kim, Taewan (Department of Civil Engineering, Pusan National University)
Han, Ki-Bong (Department of Civil Engineering, Pusan National University)
Kim, Do-Hyung (Planning and Evaluation, Pusan National University)
Seo, Ki-Young (HK Enc)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.9, no.2, 2021 , pp. 216-222 More about this Journal
Abstract
This is an experiment to complement new ways of using concentrated water discharged from the seawater desalination plant. In this study, metakaolin, which has excellent chloride ion immobilization effect, was used as the main binder, and 10% and 20% of calcium oxide were substituted with the activator. In addition, tap-water(TW) and reverse osmosis brine water(RW) were used as mixed water. As a result of the experiment, the mixture using RW showed higher compressive strength than TW. It also showed low water absorption and high density. In the mixture using RW as mixed water, a hydration reaction substance called Friedel's salt could be observed. Considering the corrosion problem of steel, RW is considered to be applicable to products such as non-reinforced concrete, brick, and curb stone. Through this study, it is thought that it is meaningful to propose a new application method other than the ocean release of RW.
Keywords
Reverse osmosis brine; Metakaolin; Calcium oxide; Friedel's salt;
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Times Cited By KSCI : 1  (Citation Analysis)
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